If you've ever developed code for processing data, you know what a mess it can be—especially on Hadoop. You lack debugging tools, instant feedback, automated tests, and a sane deploy. Mortar has developed a modern framework for data processing on Hadoop and Amazon Elastic MapReduce. It is a free, open framework providing instant, step-by-step execution visibility, automated testing, reusable components, and one-button deployment. See how Mortar demonstrates this framework on Amazon EMR on a sample data set to solve a big data problem.